How the pirate captain of large upper body gets around with those stubby little legs, I do not know. His sword appears to be longer than he is tall, which suggests it is constantly trailing on the ground when sheathed.
And Alex’s block seems kinda redundant there as captain’s overly long blade wasn’t actually anywhere near cutting him. Look, it was way off to one side.

BUT then we are operating under 80s cartoon rules here. No actual cutting or bloodshed. Swords clash other swords, shoot laser beams, and are for posing (and powering up).